Method and means for tuning radioreceivers



plurality of dials.'

ments employed 35 length of. the desired station.

50 objects of theinvention Panerai e, 1921.

METHOD mans .non

L inventiony relates to .an improved method and means for actuating the tuning dialsof a radio receiving -set for tuning it to the wave length of va given broadcasting 5 station51- and more particularly relates toa such devices operable with sets having a ACertain typ ofradio receivers employ a plurality of tuningdials all of "which are l'manipulated tuning in a broadcasting. station or in tuning from one station to another; The methodemployedat present to tune such a receiver usually requires considerable patience, as the various tuning eleusually hear a certain relation to'oneL another andmust therefore be adjusted to a predetermined position to tune the receiver to the wave length of the desiredbroadcasting station. l o'.tune such a receiver,`-requires considerable manipulation'f the tuning dials, as the operator isonly capable ofmanipplating two of the dials at one time. Thus to tune the various elements of the receiver into resonance with one another and to the wave -length'of the desired station, may be a tedious operation andinay also require considerable time,v and be ftherefore objectionable, as the ;v ideal method is .toftune from one station -to -an 39 other immediately.v

An' object 'of this invention therefore is to.

provide an improved means operable an ordinary receiving set-for tuning Vall the Simultaneously. tuned to the wavej i further and more specific obj device dei mountably' secured to the tuning dials, and

therefprerusedas .an attachment to 'an or-v invention -is to provide such a -40 dinarjf receiver whereby the tuning vdials may be selectively tuned to a predetermined setting or a: given station by a single opj eration. 1

Other objects of the'invention will appear' from the. followingY description. and

companying-drawmgs and be pointed-1 out in theannexed claims. V Y In the drawings there has been disclosed a structure designed to carryout thevarious but it is to be understood that the invention is not confined to Atheexact structure shown as various changes .ring 12 having connecting 1t ma be mad thescope of the claims wh1chfollow.

apart of portion -of Uthe receiver.

ceiversof the type here shown,lthe vari inning usually bear a certainrelationwith 'respect t 'ofthe -given Vbroadcasting of the operator., the aca simple and inexpensive means which may be TUNING mronecnrvm Application mea november 13,1924. 'serial nei-7493i;

accompanying drawings formmg 5 5 -In the this speciticatiom' .l F1gure 1 is a view in front tion applied thereto;Y

Figure'2 is an enlarged detaill view 'of a 60, L

showing the improvedl tuning means demountab secured toone of the dialsthereof, and a o'show-i ing` the operating means therefor;

Figure 3,-is -a sectional v1ew'to show the 051" Preferred' manner o'f mountingfthe devce- 011 the receiver dia1; t

Figure 4 is `a detail view ofthe i'exible' 'means-adapted to be selectively secured to iv -the dial-actuating devicesor simultaneously 7. 'actuating the dials;A I'

(Figure 5. isaview howihg a .-slightlyf j modified constructiom Figure 6 a' front view of Figure 5 In the selected embodiment-'of the nven' '7.5 tion here s hownthere is-'illustrated an ori-.- e dinary' type fof radioA receiving set comprisinga cabinet 7 having the usual'panel 8 on whichl the usual tuning .dials ed@ The usual graduations`o markings-"11 80." are shown on the dialsso thatthe may be .tuned to a predetermined positioninVv tuning'A in a broadcasting station'.=f

elements employed in .the 'recaiga Se tofgne-anotherf'and it is therefore necessary that each dial mustv beadiu'stedxto -a cer- 'l tain position withl relation to theother-dials, to tune the'receiver to the wavelength of-a.

station-2. manipulation ofv the dials-by. before a station can' be' tunedf considerable lthe operator in as it is impossible for the operator to"tune -more than two dials at o ne timer Tuning'- Vof 'such a receiver therefore oftenfrequires considerable time-and patiegnceonthepart The feature of this invention is toprovide' apilied to any ordinary receiver whereby all `0 tledials maybe simultaneously and selectivelyadjustedto the wave length of a given broadcasting statlon. The means pro a spider-like member comprlsingan annular .a series of integral okes 13 elevation of a'f popular type ofrecelver-"showing my inven-v loof ` videdforfthis purpose preferably consists of 105 to s hub 14 adema jagd over the usual knob or `linger-grip of the dial 9 as shown-in Figure 3. The hub isdemountably secured to the knob 15 by such means as thesetscrews 16, `Tlre hub 14 is' valso shaped to provide a finger-grip whereby the operator may adjust the dial 9 in the usual manner 1n locating orlogging the various' stations. l'As shown in Figure 2,

' .the annular ring 12 .of the spider-like mem- .ber is preferably 'of such siz'e that the inside VAdiameter thereof will be relatively larger .than the .outside diameter of the tuning dia-l l 95 so that the operatorv may see the usual markingsjon the dial when tuning in a statOI-l. l

Av` 'series of apertures 17 are provided in a portion ofthe annular ring 12 'as particularly .shown in Figure 2,'and these apertures I are'preferably spaced to correspond to the markings on thedial and are so arranged that they will-be located in that portion of the ring opposite the. markings 11 on the vdial.` The means provided for actuating the spider-like members, and therefore the dials 19, preferably consists fin. .a flexible mea'ns. 'connecting' together the three dials. As

show'n in Figure 4, this' flexible means preferably consists of aseriesfof'cords 18 connected togetherat one end and secured to a main'cor'd 19 'having suitabletabs 2l secured to -thelower end t e reof upon Awhich the usual .call letters of the station may be stampedvor m'arked,{as indicated by the letbeing pulled is' secured, will be in ali -with the apertures 22. in the baseboard 23 ters- A, B, C, D and E. The other ends of the cords: 18 preferably pass upwardly T through 'a series ,of apertures 22 provided inthe baseboard 23 o f the receiver andare detachably secured to theannular ring12by means Vof the apertures 1 7, preferably. by be- 4ing knotted Vat-2t therein as shown in Figure 'f` 43. Thus when the cords have been secured t'o the *rings ..12, ln'iollnted on the dials, and a downward pullis exerted on the tab 21 all of i the dials will be simultaneously actuated'or rotated until theaperture, in which the 'cord and the axes. ofthe .dials 9: A flexible compensating member "25 is interposed in each cord 18 and functions to compensate for -any'variations in the lengthr4 'of the cords I rotate the dials;

Y .To various broadcasting stations are 4first tuned when thetafb 21 is' pulled downwardly to to rotate the .dials to tune in astation, the vselectedhtab 21 will be `drawn downwardly until all ofthe dialsj come toa stop,l a" position determined by the predetermmed ocation of the cords 18 on the annular rings 12.

ply this device toa radio set, the

in. by manually operating Athe :dials i). `As

soon. as a, station has been vtuned in, the upper ends of the cords 18 will vbe secured apertures 'of the annular ringi12- ula-the In Figures/5. and 6, there is entv --Thuswhen it. is desired located directly opposite the reading on the dials, determined by the stationary .marks I26 provided on the panel 8 above each dial.

As soon as the cordshave -thus been secured to the rings 12 the call letters of the station. may be marked upon. the tab 21 so that the operator willknow what tab to pull when it is Vdesired to -bring in -a' certain station. After anumber'of stations have thus been tuned in and the cords 18 secured to their respective apertures in the annular rings 12 the operator may readily and quickly tune from one'sta'tion to another by pulling v upon the selected tab depending beneath the receiving set. This is of particular advantage in receiving sets employing three.

or more tuning ldialsasby its use the dials may quickly be adj-usted to as predetermined position without loss of time.

lslightly modified construction wherein a uide block 27 -is mounted upon the base,- oard 23 beneath each dial. This guide block is provided with a series of apertures 28 through which the cords 18 lare passed,

as shown in the above mentioned figures. These blocks 27 function to guide the cords in a manner similar to the function of the apertures 22shown in Figures 1, 2 and 3;

The novel device shown on the drawing is shown `'a' designed as an attachment to anordinary 1 tuning dial .andis demountably secured thereto by means of the setscrews 16. "If deslred, the device4 may readily be .removed from the dials and the set tuned in the usual manner. It is also to be understood that .in-

-place of the spider-like member or attach-v ment, here shown demount-ably secured tothediah a special dial vmay be provided having a marginal-edge portion wherein the apertures 17 may be provided as now shown in the annular ring 12. Other means mayv also be provided for securing the ends vof departing vfrom the invention.

Itwill be understood.' that -the spider-like rings need not be mounted directly upon the lthe cords 18 to the annular ring 12 without. no

5 tuning dials, but maybe suitably connected lthereto as in the rearof these dials. p

In the vaccon'upanyingrdrawing this novel tuningdevice is shown4 as appliedto a revceiving set employing three tuning dials, .but .itv is tol be understood that the device may be' used onA any type of,Y receiving' set, whether employing one -or a'plurality o f tuning dials, by simply .varying the number; of

cords 18 to the number of dials employed.

Also, if desired, extension cords (not shown).

vmay be secured-to the. tab cords 19,.-thereby radio. set -havi flexible means when pulled rotating all of' the dials simultaneously to set them to indicate certain figures or characters.

3. The combination with a radio set having a plurality of tuning dials, of spiderlike rings mounted on said dials and having groups of perforat-ions therein, each perforation corresponding to a certain figure or character on the dial and setting the dial for such figure or character when the perforation is moved to a point below and in line with the vertical axis of the dial, and

- means engaging said perforations for shift- J ing -member having one ing all of t-hel dials simultaneously to set them to indicate a certain group offigures or characters.

4. The combination with a radio set having. a plurality of tuning dials, of a series of cords and guides therefor arranged adjacent to sa'iddials and having tabs corresponding to the combination of gures or characters for which the dials must be set to tune in a certain station, and means connecting said cords with said dialsfor rotating all the dials simultaneously to set them for the combination of figures or characters represented b the cord that is operated.

5. The com ination with a .radio receiving set having a tuning dial, of a flexible actuatend demountabl and selectively-'secured to the tuning dia, said actuatin member passing through a stationary (guide and having an indicating tab secure to the opposite end thereof, whereby it may: be pulled to actuate the tuning dial.

6. The combination with a radio set having a plurality of dials, of tabs representing the logs of different stations, flexible elements connecting the tabs to said dials and adapted to be operated separately to set the dials simultaneously for the log of each station.

7. The combination with a radio set hav.`v

- ing, a plurality of dials, of flexible devices vadapted to represent the logs of different stations and connected for individual inove- 60 ment to said dials for moving them simultaneously to log the desired station. v

8. The combination with a radio set havingv a plurality of tuning dials, oiQ spiders connected thereto and having a group o perforations therein, exible means connected with said perforations, said'exible. means When pulled rotating all of the dials simultaneously to set them to indicate certain figures or combinations.

' 9. The combination -with a radio set having a plurality of tuning dials, of spiderlike rings connected thereto andhaving groups of perforations, each perforation corresponding to a hcertain figure or character on the dial, and adapted for setting the dial in correspondence ,to such figure or character when the perforation is moved toV a axis of the dial, and means engaging said perforations for shifting all of the dials simultaneously to set them in correspondence to a certain group of figures or characters.

10. The combination with a radio set having a plurality of tuning dials, of members axially concentric with said dials and havingv groups of perforations therein, each perforation corresponding to a certain figure or `connection on the dial and setting the dial in correspondence to said figure or character when the perforation is moved to va point below and in line with4 the vertical axiscof the dial, and means engaging said perforations for shifting all the dials simultaneously to set them to indicate a certain group of figures or connections.

11. A device of the class described comprising a plurality of rotatable dials, a guide adjacent each dlal, iiexible dial operating m means for each `dial connected for rotating the dial in predetermined degree, said flexible means passing through respective guides, and thereafter connected for movement in umso n 12. A. plurality of rotatable lgraduated 105 dials, a series of flexible dial operating means for each dial, each adapted for rotatin the dial, in a. dierent degree, correspon common uide for the dial operating means of each ial, one member of each series of means of'each dial connected together, after passing through the guides, for movement 1n unison.

In witness whereof, I have hereunto set 5 my hand this 8th' day of November, 1924. l

WII'QFRID PAUL HEATH.

oint below and in line' with the vertical g to the graduations of the dial, a no 

